What I Know/what I don't

I know if I call right now you won't pick up down on my luck I don't know why why'd you lie I know that you said you loved me for free Now you don't why I guess this is bye I don't know why you even said it I knew it was too good to be true now I feel like I'm sick with the flu I know it wasn't a dream cause I still have your messages reading them like my favorite book like where did the protagonist fall for it I knew when you took my heart it wasn't coming back